2nd Remodel project question about attic WOOD

Hey, last summer i completely redid my garage, made it into a home gym. The garage looked terrible and was ready to be torn down but we kept it up and never thought it could look as it does now. (will post pics at a later time)

Anyway, I am taking on a much bigger, more important project. However, I believe it will be less difficult seeing how I am actually dealing with leveled wood.

I am going to remodel my attic, right now its a bunch of wood and a half-done 50 year old sheet rocked room made out of left over wood that i will completely take down.

So here we go, I will have a big empty space with just the wood visible ready for the job.

My question now is, should i go over the 55+ year old wood with new wood over it for more support. Keep in mind I am on a small budget, but if its necessary i will do. The wood it fine, doesn't seem damp or anything, but i was thinking to put 4x4's horizontally across so when i put the sheet rock up it will be we easier and more leveled? Do you agree, is this necessary?

2nd Remodel project question about attic WOOD

Pictures are too dark and out of focus to see what's going on clearly.
Your description of the subfloor is interesting. Are you sure the boards are 16" wide? They seem to be on top of the joists. If they were even, you would see each joist and the joist top would be on the same plane.
See if you can set up lighting and take a few more photos that are in focus.
Can't help if I can't see.
Ron

2nd Remodel project question about attic WOOD

2nd Remodel project question about attic WOOD

Obviously a dumpster is in your future.
I'm no pro but I would bet that the space does not allow for putting in a bedroom due to lack of headroom. Someone will know.
If it were me, I'd check on that before going to crazy with work.

2nd Remodel project question about attic WOOD

Its a good size, i wish it had a little higher ceiling, but since when do you walk around in ur room? at the highest points i can walk with out ducking or anything, and my plans was to put a bed in the bigger back part and a tv, computer, and game system with a couch on the smaller side, which will work out perfect space wise.